Espresso coffee machine



FIG. 1 is a perspective view of an espresso coffee machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a right side view of the espresso coffee machine showing the clock. 

The ornamental design for an espresso coffee machine, substantially as shown and described. 